If a child finds a stick, and it starts hitting other children. You take the stick away from the child and say, "you've shown you can't be trusted with this stick".
Suarez has proven he can't be trusted with his teeth so we replace them with removable dentures and before every game he must "go gummy".
Then if worse comes to worst and he tries to bite someone for a 3rd time it will look like he's trying to give them a bizarre grandad kiss, everyone has a laugh and the game carries on with nobody getting hurt.